getting next row in sql with a loop

Question

I might not have the best title for my question but this is what I mean. I have this result which results after a query with a couple of joins.

 id  | owner_id     |   name    |        order | count 
-----+--------------+-----------+--------------+-------
 274 |        25041 | first     |            1 |     0
 269 |        25041 | second    |            2 |     2
 275 |        25041 | third     |            3 |     0
 276 |        25041 | fourth    |            4 |     0
 273 |        25041 | fifth     |            5 |     1
 277 |        25041 | sixth     |            6 |     0

and I need a query that use is to add a column with the next name depending using the order column above. It should loop that it should say after the sixth follows the first.

 id  | owner_id     |   name    |        order | count |   next    
-----+--------------+-----------+--------------+-------+-----------
 274 |        25041 | first     |            1 |     0 | second
 269 |        25041 | second    |            2 |     2 | third
 275 |        25041 | third     |            3 |     0 | fourth
 276 |        25041 | fourth    |            4 |     0 | fifth
 273 |        25041 | fifth     |            5 |     1 | sixth
 277 |        25041 | sixth     |            6 |     0 | first

possible duplicate of How to compare the current row with next and previous row in PostgreSQL? — Godeke
– Godeke, Commented Oct 10, 2013 at 16:01

bvr · Accepted Answer · 2013-10-10 16:10:36Z

1

Try this

select t1.*
,CASE WHEN t2.name IS NULL THEN 'first' ELSE t2.name END as next 
from  Table1 as t1
LEFT join Table1 as t2 on t1.order = t2.order-1

SQL FIDDLE DEMO

answered Oct 10, 2013 at 16:10

bvr

4,8361 gold badge23 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

serengeti12 Over a year ago

Thanks!.. I doesn't work for me yet thought because 'first' here could be any text and Table1 actually a result of another query. so in my case it ... from (select ... ) as t1

Collectives™ on Stack Overflow

getting next row in sql with a loop

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related